The integration of routine maintenance activities with planned turnaround events presents a complex challenge for refineries and chemical production facilities. Through careful analysis of operational practices, this white paper reveals the intricate interplay between resource allocation, safety management, and schedule coordination. These factors significantly influence both the execution of turnaround events and the effectiveness of routine maintenance operations. Our findings suggest that while concurrent maintenance during turnarounds offers potential efficiency gains, it requires sophisticated management approaches and meticulous planning to mitigate associated risks and challenges.